US Bridges

Route 8 Southbound over Catherine ST & RTE 8 SB

Fair

Fairfield County, Connecticut · 1.3 MI N of I-95 · Structure no. 03547B

Built
1970
55 years old, rebuilt 1994
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
427 ft
4 main spans
Daily traffic
44,200
2021 count
Owner
State
State Highway Agency

About this bridge

Route 8 Southbound over Catherine ST & RTE 8 SB is a steel continuous stringer/multi-beam or girder carrying Route 8 Southbound over Catherine ST & RTE 8 SB in Fairfield County, Connecticut. It was built in 1970 and reconstructed in 1994, so it is 55 years old, younger than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 44,200 vehicles a day, roughly 6% of them trucks, projected to reach 65,677 by 2041. The structure is 427 ft (130.2 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRoute 8 Southbound
CrossesCatherine ST & RTE 8 SB
Location1.3 MI N of I-95
RouteState Highway 8
CountyFairfield County
StateConnecticut
Coordinates41.1858, -73.19311
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.4 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length427 ft (130.2 m)
Longest span109 ft (33.2 m)
Deck width53 ft (16.3 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,200 (2021)
Projected traffic65,677 by 2041
Trucks6%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Route 8 Southbound over Catherine ST & RTE 8 SB built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1994.

What condition is Route 8 Southbound over Catherine ST & RTE 8 SB in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does Route 8 Southbound over Catherine ST & RTE 8 SB carry?

About 44,200 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Route 8 Southbound over Catherine ST & RTE 8 SB?

The structure is 427 ft (130.2 m) long with a longest span of 109 ft (33.2 m) and a deck 53 ft wide.

Who owns Route 8 Southbound over Catherine ST & RTE 8 SB?

It is owned by the State Highway Agency.